Cribl Stream vs Fluentd
Cribl Stream and Fluentd are both telemetry pipeline software. Cribl Stream is a commercial product from Cribl. Fluentd is open source under Apache-2.0, with 14k GitHub stars.
Which to pick
- Pick Cribl Stream when
- Your log ingest bill is large and you want to cut, reshape or split data before it reaches expensive analytics tools.
- Pick Fluentd when
- You need a central log aggregator with plugins for unusual sources or destinations.
Side by side
Sits between log and metric sources and their destinations, filtering, reshaping and routing data to tools like Splunk, S3 or a SIEM.
A CNCF data collector that unifies logging by routing events from many sources to many outputs through a large plugin ecosystem.
Another platform to run and license; the savings only appear if you have high volume to trim.
Ruby-based and heavier than Fluent Bit or Vector; many teams now use Fluent Bit at the edge.
Production-ready (both)
Self-hosted server and cloud service
Self-hosted server
Not published
Ruby
Closed source, sold by Cribl
Open source, Apache-2.0 (permissive)
Closed source: you use it under the maker's terms and cannot change or resell the code.
You can build it into a product you sell, as long as you keep its copyright notice.
No Wikipedia article of its own
14k GitHub stars
Not known
Established: started 15 years ago, latest release v1.20.1.
Other comparisons
More telemetry collectors and pipelines
Both sides were judged on 2026-11-03 from makers' descriptions, Wikipedia, READMEs and GitHub data. License, age and popularity lines are worked out directly.